TP-Hyperlink Tapo T315 Evaluate – Matter Suitable Temperature & Humidity Sensor with Show

On the finish of 2023, I reviewed the TP-Hyperlink Kasa KE100 radiator valve and had very combined emotions in direction of it. It’s incredible worth for cash, however on the time, it was not suitable with the TP-Hyperlink Tapo H100 hub, and I went on to criticise the mess of Kasa and Tapo interoperability.

Lately, issues have modified, and now you can use the KE100 with any of the Kasa or Tapo hubs and TP-Hyperlink appears to have considerably improved the interoperability between the 2 techniques. They’ve even rolled out Matter to the Tapo H100 hub.

This, subsequently, modified my total opinion of the KE100, and the entire Kasa/Tapo state of affairs is considerably higher.

I now suppose that the KE100 TRV is among the greatest sensible thermostatic radiator valves available on the market because of the enticing pricing of the valve itself, the corresponding sensors and the interoperability between totally different sensible dwelling ecosystems because of the Matter assist.

I’ve now dedicated to utilizing the KE100 on my bed room radiators and workplace, as these are solely used sometimes and on schedule, which I manually set to match my Tado settings.

To enhance the system, I purchased the TP-Hyperlink Tapo T315 Temperature & Humidity, which permits me to get extra correct temperature readings. 


TP Link Tapo T315 2
  • The Tapo H100 Sensible Hygrometer supplies real-time and correct monitoring of temperature and humidity ranges. With a claimed measurement accuracy of ±0.54°F and ±3% RH, it ought to supply dependable readings.
  • It has a 2.7-inch e-ink show that exhibits the present temperature and humidity ranges. It additionally signifies the consolation stage utilizing facial expressions, together with the battery situation and WiFi sign power.
  • For dwelling automation, the machine can routinely flip linked gadgets on or off, corresponding to a heater, fan, humidifier and extra. This goals to optimise consolation ranges and probably save power.
  • You may obtain app notifications when circumstances fall outdoors a predefined vary. This lets you take motion if ranges change into uncomfortable.
  • It gives free cloud storage for the recorded temperature and humidity knowledge. The app additionally supplies periodic summaries in graph format for evaluation.
  • You have to a Tapo hub (H100 or H200) is required to allow the complete sensible options. This contains distant monitoring, automation, knowledge export and extra.

Design / Unboxing

TP Link Tapo T315 Design

The Tapo T315 is much like many different temperature and humidity sensors, such because the SwitchBot Meter Plus.

 It’s a easy design and makes use of an e-ink show to preserve battery. The e-ink can also be good because it doesn’t give off any mild, so you should utilize it in a bed room with out disturbing you, and it’s glare-free.

The show has a row every for the temperature and humidity sensor, then a further row with indicators for the battery, paired standing and a smiley/frowny face to point the consolation ranges.

TP Link Tapo T315 Design 2

The sensor is powered by two AAA batteries, which ought to last as long as two years. That is double the battery life in comparison with the sensors I used on my Genius Hub system and round 6 months longer than the Tado temperature sensor.


As I already had the Tapo H100 hub arrange, I simply had to enter the app, choose add a brand new sensor, then the T315 and choose the right hub to connect it to. You then put the sensor into pairing mode by holding down the sync button on the sensor and look forward to it to attach.

Linking to TP-Hyperlink Kasa Sensible Thermostatic Radiator Valve KE100

I discover that the majority sensible TRVs can provide inaccurate temperature readings by a few levels when heating. I assume it is because the sensor is closed to the place the warmth is being given off.

Due to this fact, including a further sensor provides extra correct readings and in my case, I hold the sensor on my workplace desk so it must be correct for the place I’m sat.

Inside the settings of the KE100, when you go to temperature correction, you’ve got the choice to change from the built-in sensor to a delegated sensor the place you may assign the T315.

Including to Residence Assistant By means of Matter

I skilled some issues with the hub and sensor with Matter and Residence Assistant. I’ve discovered Residence Assistant could be fairly temperamental with Matter.

With this hub, the app was in a position to determine the hub and began to generate the credentials however then stored informing me to hook up with the right WiFi, despite the fact that I used to be on it.

Nevertheless, I used to be simply ready so as to add the hub to Google Residence and SmartThings. You may then combine the hub with Residence Assistant through SmartThings.


The sensor has an accuracy of:

  • Temperature Accuracy: ±0.3°C /±0.54°F
  • Humidity Accuracy: ±3percentRH

Compared, the SwitchBot Meter Plus is:

  • Temperature Accuracy: ±0.2℃ / 0.4℉
  • Humidity Accuracy ±2 %

And the SwitchBot Indoor/Out of doors Thermo-Hygrometer is

  • Temperature Accuracy: ±0.2℃ / 0.4℉
  • Humidity Accuracy ±2 %

I even have the Airthings View Plus in my workplace, which has an accuracy of:

  • Temperature ∓ 0.1°C / F
  • Humidity ∓1%

In the course of the previous couple of weeks, I’ve used the T315, and I’ve discovered the heating efficiency to be rather more dependable, with the sensor offering the correct temperature for the TRV.

The temperature of the T315 matches my Airthings virtually completely, whereas the  Switchbot hub, which is caught on my wall a bit greater up, registers round 2°C decrease than the Tapo.

Though the official accuracy of the Tapo sensor isn’t nearly as good as among the different sensors, it’s completely enough for bettering the accuracy of room temperature readings.

Worth and Various Choices

The TP-Hyperlink Tapo T315 has an RRP of £30 however is out there on Amazon for round £23.

There’s additionally the Tapo T310 sensor, which lacks a show and is out there for simply £13.

The SwitchBot Sensible Thermometer Hygrometer Plus is out there for simply £22 and the IP65 rated Indoor Out of doors Hygrometer Thermometer is a discount at £12. With SwitchBot, if you wish to use Matter, you’d want the SwitchBot Hub 2, which is round £64.


The TP-Hyperlink Tapo T315 is a fundamental and inexpensive temperature sensor with a show that compliments the opposite Tapo sensors effectively.

It’s a good pairing with the Kasa KE100 radiator valve, because it lets you get correct temperature readings for the place you sit.

The primary factor for me is that each the KE100 valve and T315 are considerably cheaper than a valve plus sensor from manufacturers like Tado and different whole-home heating options. You clearly don’t get boiler management utilizing Tapo, however I feel the KE100 valve is an ideal inexpensive various for lesser-used rooms the place you might be comfortable utilizing a set schedule moderately than on-demand heating.

TP-Hyperlink Tapo T315 Evaluate



The TP-Hyperlink Tapo T315 is a fundamental and inexpensive temperature sensor with a show that compliments the opposite Tapo sensors effectively. It’s a good pairing with the Kasa KE100 radiator valve, because it lets you get correct temperature readings for the place you sit.


  • Affrodable and correct sensor
  • Pairs effectively with the KE100 for correct room heating


  • I had some points importing the hub and sensor with Matter into Residence Assistant